Integrated network switch with large capacity switch architecture using selectable interfaces between peripherals and switch memories

• US 5,583,856 A
• Filed: 06/10/1994
• Issued: 12/10/1996
• Est. Priority Date: 06/10/1994
• Status: Expired due to Term

• Current Assignee: RPX Corporation
• Original Assignee: Harris Corporation (L3Harris Technologies, Inc.)
• Inventors: Weir, Steven P.
• Primary Examiner(s): Olms, Douglas W.
• Assistant Examiner(s): TON, DANG T
• Application Number:
  US08/257,889
• Time in Patent Office: 914 Days
• Field of Search: 370/60, 370/94.1, 370/58.2, 370/58.1, 370/58.3, 370/110.1, 370/62, 370/13, 370/16, 370/85.1, 370/79, 370/95.3, 364/488, 364/578, 364/412, 364/231, 364/231.2, 364/232.7, 364/232.8, 364/234, 364/234.1, 364/234.2, 364/237.2, 364/237.4, 364/244, 364/252, 364/707 , 364/273.4, 395/750, 395/325, 395/550, 395/726, 395/727, 395/280, 395/750, 340/825.55, 379/96, 379/201, 379/205, 379/210, 379/266, 379/203, 379/202, 379/212
• US Class Current: 370/359
• CPC Class Codes: H04Q 11/0407 using a stored programme control

Abstract

A large capacity switch architecture is disclosed, which uses a novel "split" interface. The first part of the split interface is called a Peripheral Shelf Link Interface Unit (PSLI) and is mounted remotely from the central control. The second part is called Peripheral Interface Unit (PIU) and is mounted locally to the central control. The PSLI and the PIU are available as a copper or fiber optics dedicated unit. By selecting the appropriate matching pairs, communication can be had over a copper or fiber optics transport medium.

Claims

1. An integrated network switch comprising:

a plurality of peripheral card shelves,

a common control including a plurality of switching memories,

a first interface located remotely from said common control for interfacing between the peripheral card shelves and a transport medium,

a second interface mounted local to said common control and remote from said peripheral card shelves for interfacing between the switching memories and said transport medium,

said integrated network switch is capable of supporting a plurality of different transport media, the first and second interfaces operating to effect compatibility between the peripheral card shelves, the switching memories and the different transport media.

2. The integrated network switch of claim 1, wherein said first interface includes means for receiving serial input from said card shelves and converting said serial input into parallel output to be transmitted over said transport medium.

3. The integrated network switch of claim 1, wherein said different transport media comprises copper wires and fiber optic cables and wherein matching.pairs of said first and second interfaces dedicated to said copper wires and fiber optic cables are provided.

4. The integrated network switch of claim 1, wherein said first interface includes means for interfacing with one of copper and fiber optic cable transport medium and filter a signal received over said transport medium to extract time slots assigned to said peripheral card shelves connected to said first interface.

5. The integrated network switch of claim 1, wherein said first interface comprises a plurality of interface units, at least one of said plurality of interface units is located remotely from a peripheral card shelf to which said one of said plurality of interface units is connected.

6. The integrated network switch of claim 5, wherein a predetermined number of said plurality of interface units is multiplexed into a single fiber optics cable.

16. The integrated network switch of claim 6, wherein each of said plurality of interface units filters a signal received over said fiber optics cable to extract assigned time slots.

17. The integrated network switch of claim 16, wherein one of said plurality of interface units is connected to an octal peripheral card shelf and a hexal peripheral card shelf.

7. An integrated network switch comprising:

a plurality of peripheral card shelves;

a common control including a switching memory;

a plurality of first interfaces located remotely from said common control for interfacing between the peripheral card shelves and a transport medium;

a second interface mounted local to said common control for interfacing between the switching memory and the transport medium;

wherein said transport medium comprises a single loop transport medium connecting the plurality of first interfaces to the second interface.

8. The integrated network switch of claim 7, wherein one of said plurality of first interfaces is connected to an octal and a hexal peripheral card shelf.

9. The integrated network switch of claim 8, wherein each of said plurality of peripheral card shelves is allocated dedicated time slots for communication over said single loop transport medium.

10. An integrated network switch comprising:

a common controller having a plurality of switching memories each for switching a plurality of respective ports;

a plurality of peripheral card shelves, each having a predetermined number of peripheral cards;

a plurality of shelf link interfaces, located remotely from said common controller, each for interfacing between predetermined ones of the peripheral card shelves and a corresponding transport media;

a plurality of peripheral interfaces, mounted local to said common control and each connected to a respective one of said plurality of switching memories, for interfacing between the respective switching memory and a respective transport medium;

whereby communication over a plurality of different transport media is achieved by the plurality of shelf link interfaces and the plurality of said peripheral interfaces being matched dedicated pairs to effect compatibility between the peripheral card shelves, the switching memories and the different transport media.

11. The integrated network switch of claim 10, wherein said transport medium comprises a plurality of single loop transport media, each of said single loop transport medium connecting a at least one of the shelf link interfaces to a respective one of said plurality of peripheral interfaces.

12. The integrated network switch of claim 11, wherein one of said shelf link interfaces is connected to a plurality of peripheral card shelves, at least one of which is octal and a second one is hexal.

13. The integrated network switch of claim 11, wherein each of said shelf link interfaces is allocated assigned-time slots for communication over said single loop transport medium.

14. The integrated network switch of claim 10, wherein one of said switching memories is connected to a plurality of tone ports and a plurality of conference ports.

15. An integrated network switching system comprising:

a common controller having a plurality of matrix switching units each serving a plurality of ports;

a plurality of peripheral cards each containing a plurality of peripherals, each peripheral associated with a predetermined port;

a plurality of peripheral card shelves, each containing a predetermined number of the plurality of peripheral cards;

a plurality of shelf link interfaces, located remotely from said common controller, each for interfacing between predetermined ones of the peripheral card shelves and a transport medium between the peripheral card shelves and said switching memories;

a peripheral interface, mounted local to said switching memories and remote from said plurality of shelves, for interfacing between the switching memories and said transport medium;

whereby said transport medium comprises a single loop connecting the plurality of shelf link interfaces to the peripheral interface.